/Engine/Source/Editor/MaterialEditor/Public/MaterialEditingLibrary.h
Get the default texture parameter value from a Material
static [UTexture](API\Runtime\Engine\Engine\UTexture) * GetMaterialDefaultTextureParameterValue ( [UMaterial](API\Runtime\Engine\Materials\UMaterial) * Material, [FName](API\Runtime\Core\UObject\FName) ParameterName )